The Slotted Pan Head Machine Screw (manufactured to DIN 85 / ISO 1580 standards) is the classic choice for precision assembly where serviceability and hygiene are paramount. Unlike modern complex drives, this Slotted Pan Head Machine Screw features a simple linear slot that can be driven by any flat-bladed tool, making it the preferred fastener for antique restoration, electrical switchgear, and food processing equipment where ease of cleaning is critical.
Product Overview: Our Slotted Pan Head Machine Screw is precision-machined from Stainless Steel A2 (304) or A4 (316). It combines a low-profile rounded head with a traditional slotted drive, ensuring compatibility with heritage machinery and simplified maintenance toolkits.
Slotted Pan Head Machine Screw Specifications
| Product Name | Slotted Pan Head Machine Screw / Slotted Pan Screw |
| Standard | DIN 85 (Metric) / ISO 1580 |
| Material Grade | Stainless Steel A2 (304) / A4 (316) |
| Head Style | Pan Head (Flat Bearing Surface) |
| Drive Type | Slotted (Flat Blade) |
Engineering Insight: Why use a Slotted Drive today?
In an age of Torx and Phillips, why do engineers still specify the Slotted Pan Head Machine Screw?
1. Hygiene & Cleaning: Recessed drives (like Phillips) trap grease, bacteria, and dirt. A slotted drive is “open” and easy to wipe clean, making it mandatory for many food and pharmaceutical applications.
2. Tool Availability: You can drive a slotted screw with a screwdriver, a coin, or even a knife. This universal accessibility makes it ideal for consumer goods where the end-user might not have a toolbox.
3. Restoration: For machinery built before 1940, modern screws look out of place. DIN 85 screws maintain the authentic period-correct aesthetic.
For more history on screw drives, please refer to the Slotted screw drive entry on Wikipedia.
Material Guide: A2 vs A4
- A2 (304): Excellent for indoor furniture, electrical panels, and kitchen appliances.
- A4 (316): Required for marine environments and chemical processing equipment to prevent pitting corrosion.
Frequently Asked Questions (FAQ)
Q: Can I use a power drill with slotted screws?
A: It is difficult. Slotted drives do not “center” the bit like Phillips drives do, so the bit often slips out (“cam-out”). We recommend hand-tightening Slotted Pan Head Machine Screws for precision and safety.
Q: What is the difference between DIN 85 and DIN 920?
A: DIN 85 is the standard Pan Head. DIN 920 is a “Small Pan Head” screw with a smaller head diameter, used in tight spaces.
Looking for Hard-to-Find Slotted Screws?
Handan Bolt is one of the few manufacturers still mass-producing the Slotted Pan Head Machine Screw in stainless steel. We stock sizes from M2 to M10.
Reviews
There are no reviews yet.